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Harmful algal blooms of allelopathic microalgal species: The role of eutrophication

有害的抑生性藻類增生:  水體富營養化 所扮演之角色

Abstract

The ability of certain harmful algal species to produce and release chemicals that inhibit the growth of co-occurring phytoplankton species, here considered as allelopathy, is closely associated with competition for limiting nutrient resources.

某些有害的藻類會產生並釋出化學物質以抑制其他在同一環境中生長的浮游植物, 此一特性稱作抑生性, 與在環境中競爭營養來源密切相關.

Many phytoplankton cells are known to release elevated amounts of organic compounds under nutrient limitation.

許多浮游生物已知在限制營養的環境下會更多釋出有機物質

Eutrophication alters the nitrogen-to-phosphorus balance and, when nutrient availability is unbalanced, nutrient limitation may result.

水體富營養化 改變了氮磷平衡, 當營養供給不平衡, 就會造成營養限制.

Algal species that can compete successfully for available growth-limiting nutrient(s) have the potential to become dominant and form blooms.

這一類能成功競爭限制生長養分的藻類有潛力能成為大群

The stress conditions imposed by the shifted nutrient supply ratios can, in some algae, stimulate production of allelochemicals that inhibit potential competitors.

此種壓力的條件為改變營養供給的比率, 在某些藻類中能刺激抑生性化學物質以抑制其他競爭者的出現

Thus, under cultural eutrophication, altered nutrient (N, P) ratios and limiting nutrient supplies can stimulate increased production of allelochemicals, including toxins, by some algal species and accentuate the adverse effects of these substances on other algae.

因此, 在某些水體富營養化 ,氮磷平衡改變, 以及營養限制的培養條件下, 能刺激某些藻類物種產生抑生性化學物質, 增加此類物質對其他藻類的抑制作用.

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